Across
- 4. Pipe to get air into the body
- 6. Small 'Cauliflower' sack
- 8. Part of the heart
- 9. Muscles working in pairs
- 10. Type of contraction
- 12. A sport
- 14. Type of joint
- 15. Blood to the Heart
Down
- 1. Stops blood going backwards
- 2. Trasports Oxygen around the body
- 3. Bends the leg at the knee
- 5. Opposite to Flexion
- 7. Long Bone in the Arm
- 11. Movement at the neck
- 13. The heart is this